I've replaced frets on many old Gibsons. As John said above, replacing factory frets with larger ones and radiusing a board is a straightforward job...
I can't tell for sure from the pics, but it looks like this mandolin may have had bar frets. That might affect the way I would approach this kind of...
I started teaching music about 1990. I've been performing on and off since 1979. I play most string instruments, with guitar, mandolin, and bass at the top of the list.
I accompanied Norman Blake on his record "Flower From the Fields of Alabama," and was a member of the Fletcher Bright Fiddle Band.
I work on just about all string instruments. My specialty is precision fretwork.
Location:
Southeast Tennessee
Occupation:
Teacher, part time luthier, semi-retired professional musician